{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x6837eae5faa87bd92b79f2c9f3afe1cd42287a7094852dec94e50e1a95587273",
    "signature": "0xb9a7eb8f1ed5fd6ea1c41380f28d853ba81469ac7446a7f3c44626e1d2d45124635e16bf83726693ccba582ee44ff44b9ae1ab4f43e9f3fdd25c3e2573038ebb1b",
    "signer": "0x8c83aB7F6a7f7A93A7CeFeF6E16b212bA43529f5",
    "userId": "549340592"
  }
}